diff options
Diffstat (limited to 'net/sched/sch_api.c')
| -rw-r--r-- | net/sched/sch_api.c | 44 |
1 files changed, 25 insertions, 19 deletions
diff --git a/net/sched/sch_api.c b/net/sched/sch_api.c index c297e2a8e2a1..2b935e7cfe7b 100644 --- a/net/sched/sch_api.c +++ b/net/sched/sch_api.c @@ -971,13 +971,13 @@ check_loop_fn(struct Qdisc *q, unsigned long cl, struct qdisc_walker *w) * Delete/get qdisc. */ -static int tc_get_qdisc(struct sk_buff *skb, struct nlmsghdr *n, void *arg) +static int tc_get_qdisc(struct sk_buff *skb, struct nlmsghdr *n) { struct net *net = sock_net(skb->sk); struct tcmsg *tcm = nlmsg_data(n); struct nlattr *tca[TCA_MAX + 1]; struct net_device *dev; - u32 clid = tcm->tcm_parent; + u32 clid; struct Qdisc *q = NULL; struct Qdisc *p = NULL; int err; @@ -985,14 +985,15 @@ static int tc_get_qdisc(struct sk_buff *skb, struct nlmsghdr *n, void *arg) if ((n->nlmsg_type != RTM_GETQDISC) && !capable(CAP_NET_ADMIN)) return -EPERM; - dev = __dev_get_by_index(net, tcm->tcm_ifindex); - if (!dev) - return -ENODEV; - err = nlmsg_parse(n, sizeof(*tcm), tca, TCA_MAX, NULL); if (err < 0) return err; + dev = __dev_get_by_index(net, tcm->tcm_ifindex); + if (!dev) + return -ENODEV; + + clid = tcm->tcm_parent; if (clid) { if (clid != TC_H_ROOT) { if (TC_H_MAJ(clid) != TC_H_MAJ(TC_H_INGRESS)) { @@ -1038,7 +1039,7 @@ static int tc_get_qdisc(struct sk_buff *skb, struct nlmsghdr *n, void *arg) * Create/change qdisc. */ -static int tc_modify_qdisc(struct sk_buff *skb, struct nlmsghdr *n, void *arg) +static int tc_modify_qdisc(struct sk_buff *skb, struct nlmsghdr *n) { struct net *net = sock_net(skb->sk); struct tcmsg *tcm; @@ -1053,6 +1054,10 @@ static int tc_modify_qdisc(struct sk_buff *skb, struct nlmsghdr *n, void *arg) replay: /* Reinit, just in case something touches this. */ + err = nlmsg_parse(n, sizeof(*tcm), tca, TCA_MAX, NULL); + if (err < 0) + return err; + tcm = nlmsg_data(n); clid = tcm->tcm_parent; q = p = NULL; @@ -1061,9 +1066,6 @@ replay: if (!dev) return -ENODEV; - err = nlmsg_parse(n, sizeof(*tcm), tca, TCA_MAX, NULL); - if (err < 0) - return err; if (clid) { if (clid != TC_H_ROOT) { @@ -1372,7 +1374,7 @@ done: -static int tc_ctl_tclass(struct sk_buff *skb, struct nlmsghdr *n, void *arg) +static int tc_ctl_tclass(struct sk_buff *skb, struct nlmsghdr *n) { struct net *net = sock_net(skb->sk); struct tcmsg *tcm = nlmsg_data(n); @@ -1382,22 +1384,22 @@ static int tc_ctl_tclass(struct sk_buff *skb, struct nlmsghdr *n, void *arg) const struct Qdisc_class_ops *cops; unsigned long cl = 0; unsigned long new_cl; - u32 portid = tcm->tcm_parent; - u32 clid = tcm->tcm_handle; - u32 qid = TC_H_MAJ(clid); + u32 portid; + u32 clid; + u32 qid; int err; if ((n->nlmsg_type != RTM_GETTCLASS) && !capable(CAP_NET_ADMIN)) return -EPERM; - dev = __dev_get_by_index(net, tcm->tcm_ifindex); - if (!dev) - return -ENODEV; - err = nlmsg_parse(n, sizeof(*tcm), tca, TCA_MAX, NULL); if (err < 0) return err; + dev = __dev_get_by_index(net, tcm->tcm_ifindex); + if (!dev) + return -ENODEV; + /* parent == TC_H_UNSPEC - unspecified parent. parent == TC_H_ROOT - class is root, which has no parent. @@ -1413,6 +1415,10 @@ static int tc_ctl_tclass(struct sk_buff *skb, struct nlmsghdr *n, void *arg) /* Step 1. Determine qdisc handle X:0 */ + portid = tcm->tcm_parent; + clid = tcm->tcm_handle; + qid = TC_H_MAJ(clid); + if (portid != TC_H_ROOT) { u32 qid1 = TC_H_MAJ(portid); @@ -1636,7 +1642,7 @@ static int tc_dump_tclass(struct sk_buff *skb, struct netlink_callback *cb) struct net_device *dev; int t, s_t; - if (cb->nlh->nlmsg_len < NLMSG_LENGTH(sizeof(*tcm))) + if (nlmsg_len(cb->nlh) < sizeof(*tcm)) return 0; dev = dev_get_by_index(net, tcm->tcm_ifindex); if (!dev) |